William alphonso mcgill



UNITED STATES ATENT FFIcE.

TVILLIAM ALPHONSO MOGILL, OF OW'ENSBOROUGH, KENTUCKY, ASSIGNOR TOHIMSELF AND CORNELIUS THEODORE GAIN, OF SAME PLACE.

ART OF PRODUCING AND TRANSFERRING PICTURE-FILMS T CELLULOID SHEETS.

SPECIFICATION forming part of Letters Patent No. 368,223, dated August16, 188'7 Application filed September 23, Serial No. 177,915.(Specimens) To all whom it may concern: with the camphor solution, asabove stated. Be it known that I, WTLLTAM ALrnoNso The camphor solutionwill dissolve the cellu- MCGIL'L, of Owensborough, in the county of loidsurface and render it viseid or sticky. 55 Daviess and State ofKentucky, have invented The flowed surface of the celluloid card is nowa new and Improved Art of Producing and applied to the picture-film ortransparenqy, Transferring Picture-Films to Celluloid Sheets, beingbrought into close contact therewith in of which the following is afull, clear, and exorder that all air-bubbles may be excluded. actdescription. I In th'c course of a few hours, or as soon as the 60 Myinvention relates to the production of a parts are suflicientl y dry,the celluloid card In superior quality of photographs; and it conmay bestripped from the plate, taking the sists of a process whereby apicture-film ispropicture-film with it, which film will have a duced andtransferred to a celluloid backing smooth surface the same as that ofthe glass, in such manner that the film becomes incorand when thepicture is so stripped from the 65 porated with and forms a part of saidcard or glass it will be found that the softened cellu- 1 backing, thetwo partsthat is, the film and loid surface will have permeated thepicturethe backhw-bccomirw one inte ral iece. film and that the film andits backin will be Q D In carrying my invention 1nto practice I 1n onelntcgral mass. The picture may now preferably employ a true plateglassof the be trlmmed to any desired size. 7C

desired size for the picture to be produced Pictures produced by theprocess hereinand transferred. The glass having been scbefore describedpossess great beauty ol'finish, lected and properly cleaned, I form asafetyand may be used for any of the purposes to edge of albumen aneighth or one-quarter of which the ordinary photograph is applied, aninch wide on the outer edge of the plate, with the advantage, however,that the celluthe object of the rim being to prevent the picloidpictures are more permanent, less liable turefilm from washing offduring the 1naniputo abrasnre or injury, besides being impervilation ofthe plate, and the absence of albuous to the action of most acids andalkalies. men on the other part of the plate being to These picturesare, moreover, unchangeable prevent the picture from adhering too tight.under atmospheric conditions. s The picture or transparency may be madeby I am aware that thin sheets of celluloid have the collodiochlorideprocess, being printed, been used forsnpporting the gelatinebromidetoned, and fixed as usual; or it may be made film, and also that it isnot new to separate or by the ordinary wet eollodion process throughstrip the finished negative from the celluloid, a negative in the mannerwell understood by the latter being effected by pouring upon the Sphotographers; but ifinade by the latter proplate, after leveling, athin layer of plain cess the transparency should be flowed with agelatine solution.

weak solution of mercury after being fixed in Having thus described myinvention, Ielaim a weak cyanide-of-potassium solution, so that as newand desire to secure by Letters Patentthe shadows will be toned andblackened, The hereindescribcd process of producing 3 which process oftoning and blackening may and transferringphotographs, which consists 0be watched from the side of the plate opposite in preparing apicturefilm or transparency by to that upon which the film is placed.Alter the collodio-chloride or by the ordinary wet the film is properlytoned it is washed and collodion process, in toning and fixing theplaced to dry. lVhen the film is dry and picture film, drying the same,and in apply- 5 ready to he transferred to the celluloid card, ingthereto a celluloid card that has been 5 said card is flowed with asolution consisting flowed with a solution of gum-camphor and ofgum-camphor and alcohol, in the proporalcohol, allowing the card to dry,and striptions of one ounce of gum-camphor to one ping it from theglass, substantially as de pint of alcohol. Although not absolutelyesscribed.

sential I prefer to flow the card with a live XVILLIAM ALPIIONSO MoGILL.5o grain solution of plain collodion-that is, five Witnesses:

grains gun-cotton to one ounce solvent, which J. THOMAs,

is allowed to set and dry previous to flowing F. V. S'rTnMAN.

